A method and system for extracting spatiotemporal data of power grids based on WebGIS

Abstract

This invention provides a method and system for extracting spatiotemporal data of a power grid based on WebGIS. The method responds to user-inputted login information, selected power grid branch scheme, power grid operation mode, and WebGIS display time. Based on set first to sixth extraction rules, it determines the final set of power grid equipment for the power grid scheme to be displayed. Furthermore, based on the final set of power grid equipment and WebGIS services, it determines all data for the power grid scheme to be displayed in WebGIS. The method and system, based on the characteristics of power grid data services and combined with WebGIS technology, extract power grid WebGIS display data in the "time and space" dimensions. This enables flexible extraction of power grid data under arbitrary time and space constraints, even in scenarios involving multi-person collaboration, multiple branch schemes, and different power grid operation modes. While ensuring the completeness of the extracted power grid data, it minimizes the amount of data extracted, achieving an effective balance between accuracy and efficiency in data extraction.

Description

Technical Field

[0001] This invention relates to the field of power system visualization, and more specifically, to a method and system for extracting spatiotemporal data of power grids based on WEBGIS. Background Technology

[0002] Given the characteristics of power grid data and the technical features of WebGIS, many methods for extracting and displaying power grid visualization data based on WebGIS have been developed. However, traditional WebGIS display methods for power grids typically only show the power grid structure and its equipment components at a specific point in time or within a specific time window, including direct display of simulation calculations (PSD-BPA / PSASP). They do not allow for dynamic viewing of the entire lifecycle of power grid equipment on the WebGIS page. Furthermore, for parallel maintenance of multiple branch schemes based on a unified data source, and for cross-unit parallel collaborative maintenance of different data in different regions, traditional extraction methods tend to extract information from all equipment in the entire network. This leads to data redundancy, numerous rolling maintenance versions, and potential conflicts in WebGIS-based data maintenance between different units, resulting in a significant amount of repetitive work. Summary of the Invention

[0003] To address the technical problems in existing technologies, such as the inability to dynamically view the entire lifecycle of power grid equipment on a WEBGIS page, the inability to perform parallel maintenance of multiple branch schemes based on a unified data source compared to parallel collaborative maintenance by different units in a region, data redundancy during extraction, data maintenance conflicts, and a large amount of repetitive work, this invention provides a method and system for extracting spatiotemporal data of the power grid based on WEBGIS.

[0004] According to one aspect of the present invention, the present invention provides a method for extracting spatiotemporal data of power grids based on WEBGIS, the method comprising:

[0005] The power grid visible area of ​​the user is determined in response to the login information entered by the user;

[0006] In response to the power grid branch scheme selected by the user, based on the first extraction rule set, a first set of power grid equipment to be displayed is determined according to the information of the power grid branch scheme and the information of the pre-set power grid basic scheme.

[0007] Based on the second extraction rule set, the second set of power grid equipment is determined according to the power grid equipment information of the user's visible power grid area and the first set of power grid equipment.

[0008] Based on the set third extraction rules, and according to the selected WEBGIS display time and the second set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined;

[0009] Based on the final set of power grid equipment and WEBGIS services, determine all the data for displaying the power grid solution in WEBGIS.

[0010] Furthermore, based on the set second extraction rule, after determining the second power grid equipment set according to the power grid equipment information of the user's visible power grid area and the first power grid equipment set, the process further includes:

[0011] In response to the power grid operation mode selected by the user, based on the set fourth extraction rule and fifth extraction rule, the fourth power grid equipment set to be displayed is determined according to the information of the power grid operation mode and the second power grid equipment set;

[0012] Based on the sixth extraction rule set, and according to the selected WEBGIS display time and the fourth set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined.

[0013] Furthermore, the process of determining the user's power grid visibility area in response to user-inputted login information includes:

[0014] The power grid data based on a unified data source is divided into several databases, and the temporal and spatial constraints of each database on power grid equipment are determined. These databases include an equipment organizational structure database, a branch scheme database, an equipment parameter database, an operating mode database, a user permission database, a GIS equipment-related database, and a simulation calculation database.

[0015] The device organization structure library is used to record the unique area of ​​the power grid to which each power grid device belongs, where the power grid device number is DEVICE. ID The power grid area code is AREA ID DEVICE of power grid equipment ID It is unique;

[0016] The branch scheme library is used to record information about the power grid's branch schemes. This information represents a collection of power grid equipment that may exist in future power grid planning schemes. ID ;

[0017] The device parameter database is used to record information about the basic scheme and the device parameters based on the power grid. ID Record the equipment parameters of power grid equipment in the basic power grid scheme and branch scheme. The information in the basic power grid scheme is a set of power grid equipment currently in operation and power grid equipment scheduled to be put into operation at future times. base The equipment parameters include the equipment commissioning time and decommissioning time;

[0018] The operating mode library is used to record information about power grid operating modes, wherein the information about power grid operating modes includes the set of AREA (area) of power grid regions studied for each operating mode. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ];

[0019] The user permission database is used to record power grid user login information and permission information. The permission information is a set of AREA (areas) of power grid regions corresponding to the user login information. USERID ;

[0020] A GIS equipment-related database is used to record information about power grid equipment and GIS.

[0021] The simulation calculation library is used to record relevant information for simulation calculations of power grid equipment.

[0022] Furthermore, in response to the user-selected power grid branch scheme, based on a set first extraction rule, a first set of power grid equipment for the power grid scheme to be displayed is determined according to the information of the power grid branch scheme and the information of a pre-set power grid basic scheme, wherein the expression of the first extraction rule is:

[0023]

[0024] In the formula, SPACE com1 This is the first collection of power grid equipment for the power grid solution to be showcased. base It is a collection of power grid equipment in the power grid infrastructure scheme, SPACE ID It is the set of power grid equipment in the selected power grid branching scheme, where x is the space. base and SPACE ID The two schemes both include power grid equipment. When the equipment parameter information of the power grid equipment is different in the two schemes, SPACE ID The device parameters cover SPACE base The device parameters in the SPACE file are taken from the SPACE file. ID The power grid equipment in the system is used as the final equipment.

[0025] Further, the determination of the second power grid device set based on the set second extraction rule, according to the power grid device information of the user's visible power grid area and the first power grid device set, includes:

[0026] According to the AREA USERID Based on the correspondence between power grid devices and power grid regions in the device organization structure library, the set of power grid devices (DEVICE) in the user's visible power grid region is determined. USERID , wherein, the AREA USERIDIt is the set of power grid areas that the user has visibility permission for;

[0027] Based on the second extraction rule set, according to the user's DEVICE USERID The first set of power grid equipment is used to determine the second set of power grid equipment, wherein the expression for the second extraction rule is:

[0028]

[0029] In the formula, SPACE com2 It is the second set of power grid equipment.

[0030] Furthermore, based on the set third extraction rules, and according to the selected WEBGIS display time and the second set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined, including:

[0031] Obtain the commissioning time (TIME) of the power grid equipment in the second set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom2-IN and retirement time DEVICEID-SPACEcom2-OUT Among them, when the power grid equipment in the second power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded is determined when the power grid equipment in the second power grid equipment set belongs only to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined;

[0032] Based on the set third extraction rule, according to the TIME DEVICEID-SPACEcom2-IN TIME DEVICEID-SPACEcom2-OUT The final set of power grid equipment for the power grid scheme to be displayed is determined by the WEBGIS display time TIME0, wherein the expression of the third extraction rule is:

[0033]

[0034] The set of power grid devices in the second set of power grid devices that satisfy the third extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

[0035] Furthermore, in response to the user-selected power grid operation mode, the fourth power grid equipment set is determined based on the set fourth and fifth extraction rules, according to the information of the power grid operation mode and the second power grid equipment set, including:

[0036] Based on the selected power grid operation mode, the set of power grid areas under study, AREA, is determined. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ];

[0037] According to the AREA CASEID Based on the correspondence between power grid equipment and power grid regions in the equipment organization structure library, the set of power grid equipment (DEVICE) for the operating mode is determined. CASEID ;

[0038] Based on the fourth extraction rule set, according to the DEVICE CASEID The third set of power grid equipment to be displayed is determined by the second set of power grid equipment, wherein the expression of the fourth extraction rule is:

[0039]

[0040] Obtain the commissioning time (TIME) of the power grid equipment in the third set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom3-IN and retirement time DEVICEID-SPACEcom3-OUT Among them, when the power grid equipment in the third power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded in the middle is determined when the power grid equipment in the third power grid equipment set only belongs to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined;

[0041] Based on the fifth extraction rule set, according to the TIME... DEVICEID-SPACEcom3-IN TIME DEVICEID-SPACEcom3-OUT and power grid time window [TIME] CASEID1 TIME CASEID2 The fourth set of power grid equipment to be displayed is determined, wherein the expression of the fifth extraction rule is:

[0042]

[0043] The set of power grid devices in the third set of power grid devices that satisfies the fifth extraction rule is the fourth set of power grid devices to be displayed. com4 .

[0044] Furthermore, based on the set sixth extraction rule, and according to the selected WEBGIS display time and the fourth set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined, wherein the expression of the sixth extraction rule is:

[0045]

[0046] In the formula, TIME0 is the selected WEBGIS display time, and TIME... DEVICEID-SPACEcom4-IN and TIME DEVICEID-SPACEcom4-OUT These are the commissioning times (TIME) of the power grid equipment in the fourth set of power grid equipment. DEVICEID-SPACE-IN and retirement time DEVICEID-SPACE-OUT ;

[0047] The set of power grid devices in the fourth set of power grid devices that satisfies the sixth extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

[0048] Furthermore, the step of determining all data for displaying the power grid solution in WEBGIS based on the final power grid equipment set and WEBGIS service includes:

[0049] Extract the power grid data to be displayed from the final power grid equipment set from the equipment parameter library, operation mode library, equipment GIS related library, and simulation calculation related library;

[0050] Extract base map data based on WEBGIS services;

[0051] The power grid data to be displayed and the base map data are overlaid in layers to output all the data of the power grid scheme to be displayed in WEBGIS.

[0052] According to another aspect of the present invention, the present invention provides a system for extracting spatiotemporal data of power grids based on WEBGIS, the system comprising:

[0053] A region determination unit is used to determine the power grid visible area of ​​the user in response to the login information input by the user;

[0054] The first extraction unit is used to, in response to the power grid branch scheme selected by the user, determine the first set of power grid equipment to be displayed based on the information of the power grid branch scheme and the information of the pre-set power grid basic scheme, according to the first extraction rule set;

[0055] The second extraction unit is used to determine a second set of power grid equipment based on the power grid equipment information of the user's visible power grid area and the first set of power grid equipment, according to the set second extraction rules.

[0056] The third extraction unit is used to determine the final set of power grid equipment for the power grid scheme to be displayed based on the set third extraction rules, the selected WEBGIS display time, and the second set of power grid equipment.

[0057] The data display unit is used to determine all the data of the power grid scheme to be displayed in WEBGIS based on the final set of power grid equipment and WEBGIS services.

[0058] Furthermore, the system also includes:

[0059] The fourth extraction unit is used to respond to the power grid operation mode selected by the user, and determine the fourth set of power grid equipment to be displayed based on the information of the power grid operation mode and the second set of power grid equipment, according to the set fourth extraction rules and fifth extraction rules.

[0060] The fifth extraction unit is used to determine the final set of power grid equipment for the power grid scheme to be displayed based on the set sixth extraction rule, the selected WEBGIS display time, and the fourth set of power grid equipment.

[0061] The method and system for extracting spatiotemporal power grid data based on WEBGIS of the present invention, in response to user-input login information, determine the user's visible power grid area; in response to the user's selected power grid branch scheme, based on a set first extraction rule, determine a first set of power grid equipment for the power grid scheme to be displayed according to the information of the power grid branch scheme and the information of a pre-set power grid basic scheme; based on a set second extraction rule, determine a second set of power grid equipment according to the power grid equipment information of the user's visible power grid area and the first set of power grid equipment; based on a set third extraction rule, determine a final set of power grid equipment for the power grid scheme to be displayed according to the selected WEBGIS display time and the second set of power grid equipment; or in response to the user's selected power grid operation mode, based on a set fourth and fifth extraction rules, determine a fourth set of power grid equipment for the power grid scheme to be displayed according to the information of the power grid operation mode and the second set of power grid equipment; based on a set sixth extraction rule, determine a final set of power grid equipment for the power grid scheme to be displayed according to the selected WEBGIS display time and the fourth set of power grid equipment; and based on the final set of power grid equipment and WEBGIS services, determine all data of the power grid scheme to be displayed in WEBGIS. The described method and system, based on the characteristics of power grid data services and combined with WEBGIS technology, extract power grid WEBGIS display data in both temporal and spatial dimensions. This enables flexible extraction of power grid data under arbitrary temporal and spatial constraints, regardless of whether the system involves multi-person collaboration, multi-branch schemes, or different power grid operation modes. Considering the limited data storage and network bandwidth of browsers, the system minimizes the amount of extracted data while ensuring completeness, thus meeting the requirements for displaying power grid structure, substation distribution, and transmission line routes in a browser. This facilitates browsing and analysis of the power grid by simulation engineers. Attached Figure Description

[0062] Exemplary embodiments of the present invention can be more fully understood by referring to the following figures:

[0063] Figure 1 A flowchart of a method for extracting spatiotemporal power grid data based on a preferred embodiment of the present invention;

[0064] Figure 2 This is a multi-dimensional coordinate diagram of spatiotemporal data of the power grid according to a preferred embodiment of the present invention;

[0065] Figure 3 This is a schematic diagram of a database according to a preferred embodiment of the present invention;

[0066] Figure 4 This is a schematic diagram of the basic scheme and branch scheme according to a preferred embodiment of the present invention;

[0067] Figure 5 A flowchart illustrating a method for extracting spatiotemporal power grid data based on WEBGIS according to another preferred embodiment of the present invention;

[0068] Figure 6 This is a schematic diagram of the basic scheme and branch scheme according to another preferred embodiment of the present invention;

[0069] Figure 7 This is a schematic diagram of extracting power grid data according to another preferred embodiment of the present invention;

[0070] Figure 8 This is a schematic diagram of the structure of a system for extracting spatiotemporal data of power grids based on a preferred embodiment of the present invention;

[0071] Figure 9 This is a schematic diagram of the structure of a system for extracting spatiotemporal data of power grids based on WEBGIS according to another preferred embodiment of the present invention. Detailed Implementation

[0072] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0073] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0074] Exemplary Method 1

[0075] Figure 1 This is a flowchart illustrating a method for extracting spatiotemporal power grid data based on a preferred embodiment of the present invention. Figure 1 As shown, the method for extracting spatiotemporal data of power grid based on WEBGIS according to this preferred embodiment starts from step 101.

[0076] In step 101, the power grid data based on a unified data source is divided into several databases, and the temporal and spatial constraints of each database on power grid equipment are determined. These databases include an equipment organizational structure database, a branch scheme database, an equipment parameter database, an operating mode database, a user permission database, a GIS equipment-related database, and a simulation calculation database, wherein:

[0077] The device organization structure library is used to record the unique area of ​​the power grid to which each power grid device belongs, where the power grid device number is DEVICE. ID The power grid area code is AREA ID DEVICE of power grid equipment ID It is unique;

[0078] The branch scheme library is used to record information about the power grid's branch schemes. This information represents a collection of power grid equipment that may exist in future power grid planning schemes. ID ;

[0079] The device parameter database is used to record information about the basic scheme and the device parameters based on the power grid. ID Record the equipment parameters of power grid equipment in the basic power grid scheme and branch scheme. The information in the basic power grid scheme is a set of power grid equipment currently in operation and power grid equipment scheduled to be put into operation at future times. base The equipment parameters include the equipment commissioning time and decommissioning time;

[0080] The operating mode library is used to record information about power grid operating modes, wherein the information about power grid operating modes includes the set of AREA (area) of power grid regions studied for each operating mode. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ];

[0081] The user permission database is used to record power grid user login information and permission information. The permission information is a set of AREA (areas) of power grid regions corresponding to the user login information. USERID ;

[0082] A GIS equipment-related database is used to record information about power grid equipment and GIS.

[0083] The simulation calculation library is used to record relevant information for simulation calculations of power grid equipment.

[0084] In this preferred embodiment, the power grid data based on a unified data source has multi-dimensional relationships in time and space. Figure 2 This is a coordinate diagram illustrating the multi-dimensional relationship between spatiotemporal data of a power grid according to a preferred embodiment of the present invention. For example... Figure 2As shown, the coordinate graph specifically considers three dimensions: scheme dimension, spatial dimension, and time dimension. The scheme dimension refers to the simultaneous existence and parallel maintenance of multiple versions of equipment; the spatial dimension includes the power grid visible area under user permissions and the research area of ​​power grid operation modes; the time dimension includes the equipment lifecycle time range, operation mode time window range, and WEBGIS display time point for power grid equipment under the basic scheme and different branch schemes.

[0085] Based on the multi-dimensional temporal and spatial relationships of the aforementioned power grid data, when dividing the data from the unified data source, the following databases were designed: an equipment organizational structure database, a branch scheme database, an equipment parameter database, an operation mode database, a user permission database, a GIS equipment-related database, and a simulation calculation database. The temporal and spatial constraints of each database on power grid equipment were also determined. Specifically, the power grid visibility area recorded in the user permission database, the research area of ​​the operation mode recorded in the operation mode database, and the unique power grid region to which the equipment belongs in the equipment organizational structure database are all divided based on the same regional information. This achieves the association between regions and equipment, and between equipment and users, based on the power grid regional organizational structure. Figure 3 This is a schematic diagram of a database according to a preferred embodiment of the present invention. Figure 3 As shown, the equipment parameter library, equipment GIS related library, simulation calculation library, and operation mode library are all based on power grid equipment (DEVICE). ID Based on this, the equipment organization library records the equipment's subordinate areas, AREA. ID With DEVICE ID Establish connections; the user permission database records information on all users across the network, including the permissions of each user, which can then be viewed within the power grid area via AREA. ID With USER ID Establish connections to ultimately enable power grid equipment (DEVICE) ID With user USER ID The connection. And the branching scheme SPACE ID Through its included devices and DEVICE ID Establish a connection.

[0086] In step 102, the user's power grid visibility area is determined in response to the login information entered by the user.

[0087] In this embodiment, since the user permission library already contains permissions based on user USER... ID User login information and permission information were established, namely, the set of AREA (areas) of the power grid areas visible to users. USERID Therefore, the visible area of ​​the power grid corresponding to the user can be determined based on the login information entered by the user.

[0088] In step 103, in response to the power grid branch scheme selected by the user, based on the set first extraction rule, a first set of power grid equipment for the power grid scheme to be displayed is determined according to the information of the power grid branch scheme and the information of the pre-set power grid basic scheme.

[0089] Preferably, in response to the user-selected power grid branch scheme, a first set of power grid equipment for the power grid scheme to be displayed is determined based on the information of the power grid branch scheme and the information of the pre-set power grid basic scheme, according to a set first extraction rule. The expression of the first extraction rule is:

[0090]

[0091] In the formula, SPACE com1 This is the first collection of power grid equipment for the power grid solution to be showcased. base It is a collection of power grid equipment in the power grid infrastructure scheme, SPACE ID It is the set of power grid equipment in the selected power grid branching scheme, where x is the space. base and SPACE ID The two schemes both include power grid equipment. When the equipment parameter information of the power grid equipment is different in the two schemes, SPACE ID The device parameters cover SPACE base The device parameters in SPACE are taken from the data. ID The power grid equipment in the system is used as the final equipment.

[0092] Figure 4 This is a schematic diagram of the basic and branch schemes according to a preferred embodiment of the present invention. Figure 4 As shown, based on the basic scheme SPACE0 and the branch scheme SPACE b When determining the presentation scheme, since SPACE0 = {C1, C2, C3, C4, C5}, SPACE b ={C2,B1,B2}, then according to the first rule, the expression can be extracted, since the basic scheme SPACE0 and the branch scheme SPACE... b All of them include device C2, therefore, the branch scheme SPACE b Device C2 in the basic scheme SPACE0 covers device C2. The devices in the first power grid device set of the scheme to be shown are {C1,C3,C4,C5,B1,B2,C2}.

[0093] In step 104, based on the set second extraction rule, a second set of power grid equipment is determined according to the power grid equipment information of the user's visible power grid area and the first set of power grid equipment.

[0094] Preferably, the step of determining the second set of power grid devices based on the set second extraction rule, according to the power grid device information of the user's visible power grid area and the first set of power grid devices, includes:

[0095] According to the AREA USERID Based on the correspondence between power grid devices and power grid regions in the device organization structure library, the set of power grid devices (DEVICE) in the user's visible power grid region is determined. USERID , wherein, the AREA USERID It is the set of power grid areas that the user has visibility permissions for.

[0096] In this preferred embodiment, since each device belongs to a unique power grid area, after determining the power grid visible area of ​​the logged-in user based on their permissions, the set of all power grid devices (DEVICE) included in the power grid visible area corresponding to the logged-in user can be known. USERID .

[0097] Based on the second extraction rule set, according to the user's DEVICE USERID The first set of power grid equipment is used to determine the second set of power grid equipment, wherein the expression for the second extraction rule is:

[0098]

[0099] In the formula, SPACE com2 It is the second set of power grid equipment.

[0100] In this preferred embodiment, for a logged-in user, the set of power grid devices (DEVICE) included in the power grid visible area based on their permissions... USERID ={C1,C2,C3,C4,B1,B2}, then according to the expression of the second extraction rule, the first set of power grid equipment {C1,C3,C4,C5,B1,B2,C2} and the device... USERID Finding the intersection of {C1,C2,C3,C4,B1,B2} reveals that the extracted power grid equipment from the second set of equipment is {C1,C2,C3,C4,B1,B2}. In practical applications, for branch equipment, if one end is within the visible area and the other end is not, it is not extracted. However, based on the equivalent electrical parameters, it is considered a load on the busbar of the study area to ensure the integrity of the power grid topology.

[0101] In step 105, based on the set third extraction rule, and according to the selected WEBGIS display time and the second set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined.

[0102] Preferably, based on the set third extraction rule, and according to the selected WEBGIS display time and the second power grid equipment set, the final power grid equipment set of the power grid scheme to be displayed is determined, including:

[0103] Obtain the commissioning time (TIME) of the power grid equipment in the second set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom2-IN and retirement time DEVICEID-SPACEcom2-OUT Among them, when the power grid equipment in the second power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded is determined when the power grid equipment in the second power grid equipment set belongs only to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined;

[0104] Based on the set third extraction rule, according to the TIME DEVICEID-SPACEcom2-IN TIME DEVICEID-SPACEcom2-OUT The final set of power grid equipment for the power grid scheme to be displayed is determined by the WEBGIS display time TIME0, wherein the expression of the third extraction rule is:

[0105]

[0106] The set of power grid devices in the second set of power grid devices that satisfy the third extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

[0107] like Figure 4 As shown, the horizontal axis represents the power grid development time, and the rectangular boxes represent the equipment lifecycle. The left boundary of the rectangle corresponds to the equipment commissioning time, and the right boundary corresponds to the equipment decommissioning time. An open right side indicates that the decommissioning time is unknown. When the selected WEBGIS display time is 2020, since C2 and C3 in the second power grid equipment set have been decommissioned, the final extracted equipment set is {C1, C4, B1, B2}.

[0108] In step 106, based on the final set of power grid equipment and the WEBGIS service, all data of the power grid scheme to be displayed in WEBGIS are determined.

[0109] Preferably, determining all data for displaying the power grid solution in WEBGIS based on the final power grid equipment set and WEBGIS service includes:

[0110] Extract the power grid data to be displayed from the final power grid equipment set from the equipment parameter library, operation mode library, equipment GIS related library, and simulation calculation related library;

[0111] Extract base map data based on WEBGIS services;

[0112] The power grid data to be displayed and the base map data are overlaid in layers to output all the data of the power grid scheme to be displayed in WEBGIS.

[0113] In this embodiment, after determining the final extracted power grid equipment for the scheme to be displayed, other data that needs to be displayed in WEBGIS, such as substation / line labeling data and calculation-related result data, are subsets of the primary key set of the equipment in the final power grid equipment set to determine the set of data records extracted by the equipment. Combined with the WEBGIS information of the equipment and related electrical parameter information, all power grid data is extracted and displayed in layers in the browser WEBGIS.

[0114] Exemplary Method Two

[0115] Figure 5 This is a flowchart of a method for extracting spatiotemporal power grid data based on WEBGIS according to another preferred embodiment of the present invention. Steps 501 to 504 of the power grid data extraction method described in this embodiment are the same as steps 101 to 104 in the exemplary method one, and will not be repeated here.

[0116] In step 505, in response to the power grid operation mode selected by the user, based on the set fourth extraction rule and fifth extraction rule, a fourth set of power grid equipment for the power grid scheme to be displayed is determined according to the information of the power grid operation mode and the second set of power grid equipment.

[0117] Preferably, the step of determining a fourth set of power grid equipment based on the power grid operation mode selected by the user, according to the set fourth and fifth extraction rules, and the information of the power grid operation mode and the second set of power grid equipment, includes:

[0118] Based on the selected power grid operation mode, the set of power grid areas under study, AREA, is determined. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ];

[0119] According to the AREA CASEID Based on the correspondence between power grid equipment and power grid regions in the equipment organization structure library, the set of power grid equipment for the operating mode {C1,C2,C3,C4,B1,B2} is determined;

[0120] Based on the fourth extraction rule set, according to the DEVICE CASEID The third set of power grid equipment to be displayed is determined by the second set of power grid equipment, wherein the expression of the fourth extraction rule is:

[0121]

[0122] Obtain the commissioning time (TIME) of the power grid equipment in the third set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom3-IN and retirement time DEVICEID-SPACEcom3-OUT Among them, when the power grid equipment in the third power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded in the middle is determined when the power grid equipment in the third power grid equipment set only belongs to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined;

[0123] Based on the fifth extraction rule set, according to the TIME... DEVICEID-SPACEcom3-IN TIME DEVICEID-SPACEcom3-OUT and power grid time window [TIME] CASEID1 TIME CASEID2 The fourth set of power grid equipment to be displayed is determined, wherein the expression of the fifth extraction rule is:

[0124]

[0125] The set of power grid devices in the third set of power grid devices that satisfies the fifth extraction rule is the fourth set of power grid devices to be displayed. com4 .

[0126] In this embodiment, according to the database design rules, after selecting the power grid operation mode, the research area and time window for the power grid operation mode can be determined. Furthermore, based on the subordinate regions of the power grid equipment, all power grid equipment under the selected power grid operation mode is determined. In this embodiment, DEVICE... CASEID1 ={C1,C2,C3,B1,B2}, Time window [TIME] CASEID1 TIME CASEID2[2020, 2030]. When it is determined that the second set of power grid equipment in the scheme to be displayed is the same as that in the first exemplary method, namely {C1,C2,C3,C4,B1,B2}, then according to the expression of the fourth extraction rule, the equipment extracted from the third set of power grid equipment is {C1,C2,C3,B1,B2}.

[0127] Figure 6 This is a schematic diagram illustrating the basic and branch schemes of another preferred embodiment of the present invention. For example... Figure 6 As shown, when the selected operating mode time window is [2020, 2030], according to the expression of the fifth extraction rule, the devices extracted from the fourth power grid equipment set are {C1, B1, B2}.

[0128] In step 506, based on the set sixth extraction rule, and according to the selected WEBGIS display time and the fourth set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined.

[0129] Preferably, based on the set sixth extraction rule, the final set of power grid equipment for the power grid scheme to be displayed is determined according to the selected WEBGIS display time and the fourth set of power grid equipment, wherein the expression of the sixth extraction rule is:

[0130]

[0131] In the formula, TIME0 is the selected WEBGIS display time, and TIME... DEVICEID-SPACEcom4-IN and TIME DEVICEID-SPACEcom4-OUT These are the commissioning times (TIME) of the power grid equipment in the fourth set of power grid equipment. DEVICEID-SPACE-IN and retirement time DEVICEID-SPACE-OUT ;

[0132] The set of power grid devices in the fourth set of power grid devices that satisfies the sixth extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

[0133] In this embodiment, if the selected WEGGIS display time is 2020, the final set of power grid equipment for the power grid scheme to be displayed can be obtained as {C1,B1,B2} based on the expression of the sixth extraction rule and the fourth set of power grid equipment.

[0134] In step 507, based on the final set of power grid equipment and the WEBGIS service, all data of the power grid scheme to be displayed in WEBGIS are determined.

[0135] Similar to the first exemplary method, after determining the final extracted power grid equipment for the solution to be displayed, other data that needs to be displayed in WEBGIS, such as substation / line labeling data and calculation-related result data, are subsets of the primary key set of the equipment in the final power grid equipment set to determine the set of data records extracted from the equipment. By combining the WEBGIS information of the equipment and related electrical parameter information, all power grid data can be extracted and displayed in layers in the browser's WEBGIS.

[0136] Figure 7 This is a schematic diagram of extracting power grid data according to another preferred embodiment of the present invention. Figure 7 As shown, after determining the set of power grid equipment to be extracted based on user permissions, selected branch schemes, and operating modes, other power grid data can be determined through the primary key of the equipment in the set. After extracting all the determined power grid data, it can be displayed in layers in WEBGIS.

[0137] The preferred embodiment of this invention describes a method for extracting spatiotemporal power grid data based on WebGIS. This method designs a unified data source according to the "time and space" characteristics of power grid data. It designs equipment parameter libraries, branch scheme libraries, and operation mode libraries across three dimensions: time, region, and parallel schemes. These libraries are then linked to equipment organizational structures and personnel permission libraries, creating temporal and spatial constraints on power grid equipment. This transforms the extraction of power grid data into a process based on user permissions, selected branch schemes, and operation modes, gradually finding the intersection of effective equipment. Based on the final determined set of equipment, only all power grid data from the selected equipment is extracted. This ensures the completeness of the extracted power grid data while reducing the amount of data extracted, achieving an effective balance between data extraction accuracy and efficiency.

[0138] Exemplary System 1

[0139] Figure 8 This is a schematic diagram of the structure of a system for extracting spatiotemporal data of power grids based on a preferred embodiment of the present invention. Figure 8 As shown, the system 800 for extracting spatiotemporal power grid data based on WEBGIS according to this preferred embodiment includes:

[0140] Database unit 801 is used to divide power grid data based on a unified data source into several databases and determine the temporal and spatial constraints of each database on power grid equipment. The databases include an equipment organization structure database, a branch scheme database, an equipment parameter database, an operating mode database, a user permission database, a GIS equipment-related database, and a simulation calculation database, wherein:

[0141] The device organization structure library is used to record the unique area of ​​the power grid to which each power grid device belongs, where the power grid device number is DEVICE.ID The power grid area code is AREA ID DEVICE of power grid equipment ID It is unique;

[0142] The branch scheme library is used to record information about the power grid's branch schemes. This information represents a collection of power grid equipment that may exist in future power grid planning schemes. ID ;

[0143] The device parameter database is used to record information about the basic scheme and the device parameters based on the power grid. ID Record the equipment parameters of power grid equipment in the basic power grid scheme and branch scheme. The information in the basic power grid scheme is a set of power grid equipment currently in operation and power grid equipment scheduled to be put into operation at future times. base The equipment parameters include the equipment commissioning time and decommissioning time;

[0144] The operating mode library is used to record information about power grid operating modes, wherein the information about power grid operating modes includes the set of AREA (area) of power grid regions studied for each operating mode. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ];

[0145] The user permission database is used to record power grid user login information and permission information. The permission information is a set of AREA (areas) of power grid regions corresponding to the user login information. USERID ;

[0146] A GIS equipment-related database is used to record information about power grid equipment and GIS.

[0147] The simulation calculation library is used to record relevant information for simulation calculations of power grid equipment.

[0148] The area determination unit 802 is used to determine the power grid visible area of ​​the user in response to the login information input by the user;

[0149] The first extraction unit 803 is used to, in response to the power grid branch scheme selected by the user, determine the first set of power grid equipment to be displayed based on the information of the power grid branch scheme and the information of the pre-set power grid basic scheme, according to the first extraction rule set;

[0150] The second extraction unit 804 is used to determine a second set of power grid equipment based on the power grid equipment information of the user's visible area of ​​the power grid and the first set of power grid equipment, according to the set second extraction rules.

[0151] The third extraction unit 805 is used to determine the final set of power grid equipment for the power grid scheme to be displayed based on the set third extraction rules, the selected WEBGIS display time, and the second set of power grid equipment.

[0152] The data display unit 806 is used to determine all the data of the power grid scheme to be displayed in WEBGIS based on the final power grid equipment set and WEBGIS service.

[0153] Preferably, the first extraction unit 803, in response to the power grid branch scheme selected by the user, determines a first set of power grid equipment for displaying the power grid scheme based on a set first extraction rule, according to the information of the power grid branch scheme and the information of a pre-set power grid basic scheme, wherein the expression of the first extraction rule is:

[0154]

[0155] In the formula, SPACE com1 This is the first collection of power grid equipment for the power grid solution to be showcased. base It is a collection of power grid equipment in the power grid infrastructure scheme, SPACE ID It is the set of power grid equipment in the selected power grid branching scheme, where x is the space. base and SPACE ID The two schemes both include power grid equipment. When the equipment parameter information of the power grid equipment is different in the two schemes, SPACE ID The device parameters cover SPACE base The device parameters in the SPACE file are taken from the SPACE file. ID The power grid equipment in the system is used as the final equipment.

[0156] Preferably, the second extraction unit 804 determines a second set of power grid equipment based on the set second extraction rules, according to the power grid equipment information of the user's visible power grid area and the first set of power grid equipment, including:

[0157] According to the AREA USERID Based on the correspondence between power grid devices and power grid regions in the device organization structure library, the set of power grid devices (DEVICE) in the user's visible power grid region is determined. USERID , wherein, the AREA USERID It is the set of power grid areas that the user has visibility permission for;

[0158] Based on the second extraction rule set, according to the user's DEVICE USERID The first set of power grid equipment is used to determine the second set of power grid equipment, wherein the expression for the second extraction rule is:

[0159]

[0160] In the formula, SPACE com2 It is the second set of power grid equipment.

[0161] Preferably, the third extraction unit 805, based on the set third extraction rules and according to the selected WEBGIS display time and the second power grid equipment set, determines the final power grid equipment set of the power grid scheme to be displayed, including:

[0162] Obtain the commissioning time (TIME) of the power grid equipment in the second set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom2-IN and retirement time DEVICEID-SPACEcom2-OUT Among them, when the power grid equipment in the second power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded is determined when the power grid equipment in the second power grid equipment set belongs only to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined;

[0163] Based on the set third extraction rule, according to the TIME DEVICEID-SPACEcom2-IN TIME DEVICEID-SPACEcom2-OUT The final set of power grid equipment for the power grid scheme to be displayed is determined by the WEBGIS display time TIME0, wherein the expression of the third extraction rule is:

[0164]

[0165] The set of power grid devices in the second set of power grid devices that satisfy the third extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

[0166] Preferably, the data display unit 806 determines all data for displaying the power grid scheme in WEBGIS based on the final power grid equipment set and WEBGIS service, including:

[0167] Extract the power grid data to be displayed from the final power grid equipment set from the equipment parameter library, operation mode library, equipment GIS related library, and simulation calculation related library;

[0168] Extract base map data based on WEBGIS services;

[0169] The power grid data to be displayed and the base map data are overlaid in layers to output all the data of the power grid scheme to be displayed in WEBGIS.

[0170] Exemplary System 2

[0171] Figure 9 This is a schematic diagram of the structure of a system for extracting spatiotemporal data of power grids based on a preferred embodiment of the present invention. Figure 9 As shown, the system for extracting spatiotemporal power grid data based on WEBGIS according to this preferred embodiment includes a database unit 901, a region determination unit 902, a first extraction unit 903, and a second extraction unit 904, which have the same functions as the database unit 801, region determination unit 802, first extraction unit 803, and second extraction unit 804 in Exemplary System 1, and will not be described again here. In Exemplary System 2, in addition to the database unit 901, region determination unit 902, first extraction unit 903, and second extraction unit 904, it also includes:

[0172] The fourth extraction unit 905 is used to respond to the power grid operation mode selected by the user, and determine the fourth set of power grid equipment to be displayed based on the information of the power grid operation mode and the second set of power grid equipment, according to the set fourth extraction rules and fifth extraction rules.

[0173] The fifth extraction unit 906 is used to determine the final set of power grid equipment for the power grid scheme to be displayed based on the set sixth extraction rule, the selected WEBGIS display time, and the fourth set of power grid equipment.

[0174] The data display unit 907 is used to determine all the data of the power grid scheme to be displayed in WEBGIS based on the final power grid equipment set and WEBGIS service.

[0175] Preferably, the fourth extraction unit 905, in response to the power grid operation mode selected by the user, determines a fourth power grid equipment set based on the set fourth and fifth extraction rules, according to the information of the power grid operation mode and the second power grid equipment set, including:

[0176] Based on the selected power grid operation mode, the set of power grid areas under study, AREA, is determined. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ];

[0177] According to the AREA CASEID Based on the correspondence between power grid equipment and power grid regions in the equipment organization structure library, the set of power grid equipment (DEVICE) for the operating mode is determined. CASEID ;

[0178] Based on the fourth extraction rule set, according to the DEVICE CASEID The third set of power grid equipment to be displayed is determined by the second set of power grid equipment, wherein the expression of the fourth extraction rule is:

[0179]

[0180] Obtain the commissioning time (TIME) of the power grid equipment in the third set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom3-IN and retirement time DEVICEID-SPACEcom3-OUT Among them, when the power grid equipment in the third power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded in the middle is determined when the power grid equipment in the third power grid equipment set only belongs to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined;

[0181] Based on the fifth extraction rule set, according to the TIME... DEVICEID-SPACEcom3-IN TIME DEVICEID-SPACEcom3-OUT and power grid time window [TIME] CASEID1 TIME CASEID2 The fourth set of power grid equipment to be displayed is determined, wherein the expression of the fifth extraction rule is:

[0182]

[0183] The set of power grid devices in the third set of power grid devices that satisfies the fifth extraction rule is the fourth set of power grid devices to be displayed. com4 .

[0184] Preferably, the fifth extraction unit 906, based on the set sixth extraction rule, determines the final set of power grid equipment for the power grid scheme to be displayed according to the selected WEBGIS display time and the fourth set of power grid equipment, wherein the expression of the sixth extraction rule is:

[0185]

[0186] In the formula, TIME0 is the selected WEBGIS display time, and TIME... DEVICEID-SPACEcom4-IN and TIME DEVICEID-SPACEcom4-OUTThese are the commissioning times (TIME) of the power grid equipment in the fourth set of power grid equipment. DEVICEID-SPACE-IN and retirement time DEVICEID-SPACE-OUT ;

[0187] The set of power grid devices in the fourth set of power grid devices that satisfies the sixth extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

[0188] Preferably, the data display unit 908 determines all data for displaying the power grid solution in WEBGIS based on the final power grid equipment set and WEBGIS service, including:

[0189] Extract the power grid data to be displayed from the final power grid equipment set from the equipment parameter library, operation mode library, equipment GIS related library, and simulation calculation related library;

[0190] Extract base map data based on WEBGIS services;

[0191] The power grid data to be displayed and the base map data are overlaid in layers to output all the data of the power grid scheme to be displayed in WEBGIS.

[0192] The system for extracting spatiotemporal power grid data based on WEBGIS in this preferred embodiment uses a database partitioned based on a unified data source. The steps of gradually finding the intersection of the effective devices to be extracted in the scheme to be displayed are the same as those of the method for extracting spatiotemporal power grid data based on WEBGIS in this preferred embodiment, and the technical effects achieved are also the same. Therefore, they will not be repeated here.

[0193] The invention has been described with reference to a few embodiments. However, as will be known to those skilled in the art, and as defined in the appended claims, other embodiments besides those disclosed above fall equivalently within the scope of the invention.

[0194] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the art, unless otherwise expressly defined herein. All references to “a / the / the [device, component, etc.]” ​​are openly interpreted as at least one instance of said device, component, etc., unless otherwise expressly stated. The steps of any method disclosed herein need not be performed in the exact order disclosed unless explicitly stated otherwise.

[0195] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0196] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0197] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0198] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0199] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for extracting spatiotemporal data of power grids based on WEBGIS, characterized in that, The method includes: The power grid data based on a unified data source is divided into several databases, and the temporal and spatial constraints of each database on power grid equipment are determined. These databases include an equipment organizational structure database, a branch scheme database, an equipment parameter database, an operating mode database, a user permission database, a GIS equipment-related database, and a simulation calculation database. The device organization structure library is used to record the unique area of ​​the power grid to which each power grid device belongs, where the power grid device number is DEVICE. ID The power grid area code is AREA ID DEVICE of power grid equipment ID It is unique; The branch scheme library is used to record information about power grid branch schemes. This information is a collection of power grid equipment that may exist in future power grid planning schemes. ID ; The device parameter database is used to record information about the basic scheme and the device parameters based on the power grid. ID Record the equipment parameters of power grid equipment in the basic power grid scheme and branch scheme. The information in the basic power grid scheme is a set of power grid equipment currently in operation and power grid equipment scheduled to be put into operation at future times. base The equipment parameters include the equipment commissioning time and decommissioning time; The operating mode library is used to record information about power grid operating modes, wherein the information about power grid operating modes includes the set of AREA (area) of power grid regions studied for each operating mode. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ]; The user permission database is used to record power grid user login information and permission information. The permission information is a set of AREA (areas) of power grid regions corresponding to the user login information. USERID ; A GIS equipment-related database is used to record information about power grid equipment and GIS. The simulation calculation library is used to record relevant information for simulation calculations of power grid equipment; The power grid visible area of ​​the user is determined in response to the login information entered by the user; In response to the power grid branch scheme selected by the user, based on the first extraction rule set, a first set of power grid equipment to be displayed is determined according to the information of the power grid branch scheme and the information of the pre-set power grid basic scheme. Based on the second extraction rule set, the second set of power grid equipment is determined according to the power grid equipment information of the user's visible power grid area and the first set of power grid equipment. Based on the set third extraction rules, and according to the selected WEBGIS display time and the second set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined; Based on the final set of power grid equipment and WEBGIS services, determine all the data for displaying the power grid solution in WEBGIS.

2. The method according to claim 1, characterized in that, Based on the set second extraction rule, after determining the second set of power grid equipment according to the power grid equipment information of the user's visible power grid area and the first set of power grid equipment, the process further includes: In response to the power grid operation mode selected by the user, based on the set fourth extraction rule and fifth extraction rule, the fourth power grid equipment set to be displayed is determined according to the information of the power grid operation mode and the second power grid equipment set; Based on the sixth extraction rule set, and according to the selected WEBGIS display time and the fourth set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined.

3. The method according to claim 1, characterized in that, In response to the user-selected power grid branch scheme, based on a set first extraction rule, a first set of power grid equipment for the power grid scheme to be displayed is determined according to the information of the power grid branch scheme and the information of the pre-set power grid basic scheme. The expression of the first extraction rule is: In the formula, SPACE com1 This is the first collection of power grid equipment for the power grid solution to be showcased. base It is a collection of power grid equipment in the power grid infrastructure scheme, SPACE ID It is the set of power grid equipment in the selected power grid branching scheme, where x is the space. base and SPACE ID The two schemes both include power grid equipment. When the equipment parameter information of the power grid equipment is different in the two schemes, SPACE ID The device parameters cover SPACE base The device parameters in the SPACE file are taken from the SPACE file. ID The power grid equipment in the system is used as the final equipment.

4. The method according to claim 1, characterized in that, The second extraction rule based on the settings determines the second set of power grid devices according to the power grid device information of the user's visible power grid area and the first set of power grid devices, including: According to the AREA USERID Based on the correspondence between power grid devices and power grid regions in the device organization structure library, the set of power grid devices (DEVICE) in the user's visible power grid region is determined. USERID , wherein, the AREA USERID It is the set of power grid areas that the user has visibility permission for; Based on the second extraction rule set, according to the user's DEVICE USERID The first set of power grid equipment is used to determine the second set of power grid equipment, wherein the expression for the second extraction rule is: In the formula, SPACE com2 It is the second set of power grid equipment.

5. The method according to claim 4, characterized in that, Based on the set third extraction rules, and according to the selected WEBGIS display time and the second set of power grid equipment, the final set of power grid equipment for the power grid scheme to be displayed is determined, including: Obtain the commissioning time (TIME) of the power grid equipment in the second set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom2-IN and retirement time DEVICEID-SPACEcom2-OUT Among them, when the power grid equipment in the second power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded is determined when the power grid equipment in the second power grid equipment set belongs only to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined; Based on the set third extraction rule, according to the TIME DEVICEID-SPACEcom2-IN TIME DEVICEID-SPACEcom2-OUT The final set of power grid equipment for the power grid scheme to be displayed is determined by the WEBGIS display time TIME0, wherein the expression of the third extraction rule is: The set of power grid devices in the second set of power grid devices that satisfy the third extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

6. The method according to claim 2, characterized in that, In response to the user-selected power grid operation mode, based on the set fourth and fifth extraction rules, the fourth power grid equipment set is determined according to the information of the power grid operation mode and the second power grid equipment set, including: Based on the selected power grid operation mode, the set of power grid areas under study, AREA, is determined. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ]; According to the AREA CASEID Based on the correspondence between power grid equipment and power grid regions in the equipment organization structure library, the set of power grid equipment (DEVICE) for the operating mode is determined. CASEID ; Based on the fourth extraction rule set, according to the DEVICE CASEID The third set of power grid equipment to be displayed is determined by the second set of power grid equipment, wherein the expression of the fourth extraction rule is: Obtain the commissioning time (TIME) of the power grid equipment in the third set of power grid equipment from the equipment parameter database. DEVICEID-SPACEcom3-IN and retirement time DEVICEID-SPACEcom3-OUT Among them, when the power grid equipment in the third power grid equipment set only belongs to the basic scheme SPACE base At that time, the commissioning and decommissioning times of the equipment are based on the basic plan SPACE base The time recorded in the middle is determined when the power grid equipment in the third power grid equipment set only belongs to the branch scheme SPACE. ID Or it belongs to the basic solution SPACE base and branching scheme SPACE ID At that time, the commissioning and decommissioning times of the equipment are determined according to the branch scheme SPACE. ID The time recorded in the middle is determined; Based on the fifth extraction rule set, according to the TIME... DEVICEID-SPACEcom3-IN TIME DEVICEID-SPACEcom3-OUT and power grid time window [TIME] CASEID1 TIME CASEID2 The fourth set of power grid equipment to be displayed is determined, wherein the expression of the fifth extraction rule is: The set of power grid devices in the third set of power grid devices that satisfies the fifth extraction rule is the fourth set of power grid devices to be displayed. com4 .

7. The method according to claim 6, characterized in that, The sixth extraction rule, based on the settings, determines the final set of power grid equipment for the power grid scheme to be displayed, according to the selected WEBGIS display time and the fourth set of power grid equipment. The expression for the sixth extraction rule is: In the formula, TIME0 is the selected WEBGIS display time, and TIME... DEVICEID-SPACEcom4-IN and TIME DEVICEID-SPACEcom4-OUT These are the commissioning times (TIME) of the power grid equipment in the fourth set of power grid equipment. DEVICEID-SPACE-IN and retirement time DEVICEID-SPACE-OUT ; The set of power grid devices in the fourth set of power grid devices that satisfies the sixth extraction rule is the final set of power grid devices for the power grid scheme to be displayed. final .

8. The method according to claim 5 or 7, characterized in that, The step of determining all data for displaying the power grid solution in WEBGIS based on the final power grid equipment set and WEBGIS service includes: Extract the power grid data to be displayed from the final power grid equipment set from the equipment parameter library, operation mode library, GIS equipment related library, and simulation calculation library; Extract base map data based on WEBGIS services; The power grid data to be displayed and the base map data are overlaid in layers to output all the data of the power grid scheme to be displayed in WEBGIS.

9. A system for extracting spatiotemporal data of power grids based on WEBGIS, characterized in that, The system includes: A database unit is used to divide power grid data based on a unified data source into several databases and determine the temporal and spatial constraints of each database on power grid equipment. The databases include an equipment organization structure database, a branch scheme database, an equipment parameter database, an operating mode database, a user permission database, a GIS equipment-related database, and a simulation calculation database, wherein: The device organization structure library is used to record the unique area of ​​the power grid to which each power grid device belongs, where the power grid device number is DEVICE. ID The power grid area code is AREA ID DEVICE of power grid equipment ID It is unique; The branch scheme library is used to record information about the power grid's branch schemes. This information represents a collection of power grid equipment that may exist in future power grid planning schemes. ID ; The device parameter database is used to record information about the basic scheme and the device parameters based on the power grid. ID Record the equipment parameters of power grid equipment in the basic power grid scheme and branch scheme. The information in the basic power grid scheme is a set of power grid equipment currently in operation and power grid equipment scheduled to be put into operation at future times. base The equipment parameters include the equipment commissioning time and decommissioning time; The operating mode library is used to record information about power grid operating modes, wherein the information about power grid operating modes includes the set of AREA (area) of power grid regions studied for each operating mode. CASEID and power grid time window [TIME] CASEID1 TIME CASEID2 ]; The user permission database is used to record power grid user login information and permission information. The permission information is a set of AREA (areas) of power grid regions corresponding to the user login information. USERID ; A GIS equipment-related database is used to record information about power grid equipment and GIS. The simulation calculation library is used to record relevant information for simulation calculations of power grid equipment; A region determination unit is used to determine the power grid visible area of ​​the user in response to the login information input by the user; The first extraction unit is used to, in response to the power grid branch scheme selected by the user, determine the first set of power grid equipment to be displayed based on the information of the power grid branch scheme and the information of the pre-set power grid basic scheme, according to the first extraction rule set; The second extraction unit is used to determine a second set of power grid equipment based on the power grid equipment information of the user's visible power grid area and the first set of power grid equipment, according to the set second extraction rules. The third extraction unit is used to determine the final set of power grid equipment for the power grid scheme to be displayed based on the set third extraction rules, the selected WEBGIS display time, and the second set of power grid equipment. The data display unit is used to determine all the data of the power grid scheme to be displayed in WEBGIS based on the final set of power grid equipment and WEBGIS services.

10. The system according to claim 9, characterized in that, The system also includes: The fourth extraction unit is used to respond to the power grid operation mode selected by the user, and determine the fourth set of power grid equipment to be displayed based on the information of the power grid operation mode and the second set of power grid equipment, according to the set fourth extraction rules and fifth extraction rules. The fifth extraction unit is used to determine the final set of power grid equipment for the power grid scheme to be displayed based on the set sixth extraction rule, the selected WEBGIS display time, and the fourth set of power grid equipment.

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